Molding-machine.



No. 714,285. Patenied Nov. 25, 1902.5 c. m. DAY & J. ANDERSON.

.mouima MACHINE.

(Application filed. Oct. 21, 1901.)

2 Sheets-450st u.

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mus Pi I'ERS 00,. moroumcn wnsnmmo No. 714,285, r Patented Nov. 25,I902.

A c. M. DAY & JQANDERSON.

momme'mcnms.

(Appliclflon filed Oct. 81, 1901.) (No Model.) 2 shuts-shes; 2:.

UN TED TATES ATENT F CHARLES M. DAY ANnJOI-IN ANDERSON,-OF HOPEDALE,MAsSAoHUSETTs,

ASSIGNORS To DRAPER COMPANY, OF PORTLAND, MAINE, AND HOPE- DALE,MASSACHUSETTS. I

MOLDING- MACHINE.

V SPECIFICATION forming part of Letters Patent No. 714,285, dated.November 25, 1902.

Application filed October 21,190}. Serial No. 79,327. (No model.)

To whom it y OOYWZYW position every time a mold is made on the Be itknown that we, CHARLES M. DAY and machine, and means must be provided tocom- JOHNANDERSON,citiZenS ofthe United States, pensate for wear of themoving parts of the and residents of Hopedale, in the county of machinein order that this definite and fixed Worcester and State ofMassachusetts, have operative position of the pattern may alwaysinvented an Improvement in Molding-Mabe secured. chines, of which thefollowing description, in Our present invention relates tomoldingconnection with the accompanying drawings, machines of the typehereinbefore referred is a specification, like characters on the drawto;and it has for one of its objects the proro ings representing likeparts. ductionof means for eifecting a smooth and In a certaintype ofapparatus for facilitatsteady movement of the pattern absolutely ing theconstructionof moldsfor metal-foundat right angles to the face of thestrippering the drag is made by placing the flask on plate when thepattern is drawn. i a stripper-plate firmly supported on a suit Anotherobject of our invention is the pro- 15 able frame, said plate havingapertures therevision of means for attaining the exact and in for thedifferent parts of the pattern to exdefinite positioning of the patternrelative to tend through and project above the face of thestripper-plate when the mold is being conthe stripper-plate, the latterproviding for the structed, compensating for wear of the movparting faceof the mold. The pattern is ing parts of the machine or for any slightva- 20 mounted on a carrier or support which is riation in the thicknessof the stripper-plate. 7o movable toward and away from the stripper-Other-objects of our invention relate to the plate, and when the,pattern is in operative enlargement of the character of work whichposition relative to the stripper-plate the may be performed by a givenmachine, the molder fills the flask thereon With sand and improvementand simplification of the me- 25 rams it in usual manner. When the dragis chanical structure thereof, and increased effinished, the carrier ismoved awayfrom the ficiency and facility of operation. stripper-plate tothereby draw the pattern The various novel features of our inventionfrom the drag, as it is technically termed, and will be fully describedin the following specithe latter is lifted off and turnedoverinreadification and particularly pointed out in the 0 ness to receive thecope, which may be consubjoined claims. structed on a similar machine oron what is Figure 1 is afront elevation, partly broken technicallytermed. a flat-back. A flatout, of a molding-machine comprehending backis a fiat plate with such portions of a one embodiment of ourinvention,the strippattern rigidlysecured thereto as can be readper and patternplates being omitted. Fig.

5 ily drawn from the mold. 2 is a right-hand end elevation thereofpartly In order to produce accurate work with such broken out and insection. Fig. 3 is a detail, molding-machines, it is absolutelynecessary partly insection, on the line 3 3, Fig. 2, lookthat thepattern coact preciselywith the apingtoward the right and showing aportion ertured stripper-plate during the formation of the mechanism foroperating the pattern- 40 of the mold, and when the pattern is drawnplate carrier. Fig. 4 is a horizontal section from the mold its movementaway from the through the base of the carrier. and the adstripper-platemust. be smooth and even and justable connection between it and the opatright angles thereto or the fine outlines of crating means, taken on theline 4 4:, Fig. 2. the mold will be damaged. Fig. 5 is a topor plan viewof the frame of 5 Again, a molding-machine of the type rethemolding-machine shown in Figs. land 2, 5

ferred to is commonly used in connection with omitting the pattern-platecarrier, the stripa large number of patterns and their correper andpattern plates and stoolplate also spending stripper-plates, and as thelatter being omitted; and Fig. 6 is a perspective are preferably made ofa standard thickness viewof the pattern-plate carrier detached.

50 the pattern-plate must be moved into a fixed In the drawings thestripper and pattern plates are omitted, though their position isindicated in dotted lines, Fig. 2, and the pattern-plate carrier isshown in its operative position. We have herein shown the framesupported upon and rigidly secured to two like ends A A of suitable sizeand shape to properly and firmly support the superstructure and theoperating parts of the machine, the superstucture or upper part of theframe consisting of F'l-shaped front and back portions, Figs. 1 and 2,connected by a gridlike base. The front and back pieces comprisehorizontal and parallel heads A and depending legs A the heads forming'a support for the stripper-plate, (partly indicated by dotted lines atS, Fig. 2,) the lower ends of the legs being cast integral with thebase, which comprises transverse end bars A, intermcdiates a, andlongitudinal webs a the longitudinal tops 0, of which project above theend and intermediate bars A and a, as clearly shown in Fig. 2, for apurpose to be described. The heads A are each provided with acentrally-located and external boss A each of which has rigidly securedto it a depending guideway, (shown as a large and preferably cylindricalbar A,) which extends downward nearly to the bottom of the frame takenas a whole, and heavy brackets A bolted to the grid-like base of thesuperstructure,have large hubs A to embrace the guideways and supportthem at their lower portions. These oppositely-located and parallelguideways outside the front and back pieces of the frame constituterigid bearings for the pattern-plate carrier, to be described, and guideit in its movement up and down in the operation of the machine.

Referring to Fig. 2, it will be seen that the upper portion of the frameis open at its ends, so that a stripper-plate much longer than the headsor supports A maybe used with acorresponding pattern-plate, the openends of the frame permitting the use of a pattern-plate of any lengthwithin reasonable limits. This is a very important and valuable featureof our invention, as the scope of the work of a given machine is therebygreatly extended, it being manifest that the length of the pattern to beused is only limited by the inherent strength and'rigidity of thestripper and pattern plates necessary therefor. 1

The pattern -plate, by which term we mean a suitable metallic plate towhich is secured the pattern or parts thereof which project throughopenings in the stripper-plate during the formation of the mold, ismounted n pon a vertically-movable carrier, and herein the carrierisshown as substantially U-shaped (see-particularly Fig. 6) and comprisingupright arms 0, connected at their lower ends by a transverse baseportion O the tops of the arms being laterally extended or made T-shaped, as at O, to constitute parallel supports, on which thepattern-plate P (partly shown in dotted lines, Fig. 2) will be supportedand secured, the carrier being movable points of support-via, theguideways vertically within the frame of the machine, as clearly shownin Fig. 2, and the carrier is slidably connected with the guideways byheavy hubs c c at the lower and upper ends of the arms, respectively,and projecting outwardly therefrom, the said hubs having a sliding fiton the guideways A The width of the pattern-plate is of course limitedby the space between the stripperplate supports A ,.as will be manifestfrom Fig. 2; but, as has been stated, the length of the pattern-plate isnot restricted to the length of the machine-frame from end to end, asthe extended ends of the pattern-plate may project as far as isnecessary or desirable beyond the open ends of the frame.

The guideways support the carrier at its upper and lower portions and'onopposite sides thereof, and the actuating means for the carrier isconnected with the latter between its and at the lower portion of thecarrier, thus greatly economizing space and also permitting a stoolplateto be employed when molds are being made requiring the use of stools.

The stool-plate, if one be used, and which may be of usual construction,is not herein shown, is supported on the upper faces a of the webs a andby making the stool-support as a plurality of narrow longitudinalsurfaces we are enabled to reduce the machining or planing of thesesurfaces to a very material extent.

It will be manifest that the stool-plate may extend as far beyond theends'of the frame as necessary to correspond to any given pattern andstripper-plates, although for such extended stool-plate aslightly-different form of actuating-handle will have to be used, to bereferred to hereinafter.

The grid-like base of the superstructure is provided with depending lugsof, (see Fig. 1,) which form bearings for an operating rockshaft D,extended in the direction of the length of the machine and projectingbeyond one of the end frames, as shown in Figs. 1 and 2, said shaftbeing shown in Fig. 3 as provided with a pair of crank-arms d, rigidlysecured thereto and connected by a crank-pin d which is extended throughthe upper end of a bent link D the lower end thereof being pivotallyconnected with the pattern-plate carrier at or near the base thereof andsymmetrically between its supportingguideways, the link moving in avertical plane intersecting the base and the upright arms to prevent anytwisting of the carrier when it is moved.

Referring to Figs. 4 and 6, the central portion of the carrier-base C isenlarged, as at 0 and provided with an elongated aperture 0*, apivot-pin 0 Fig. 4., being passed transversely through the sides of theenlargement 0 and held from rotation by a set-screw 10, Fig. Within theopening 0 an eccentric c is loosely mounted on the pivot-pin 0 theperiphery of the eccentric being embraced by IIC the split end (1 of thelink, and said split end is adapted to be clamped tightly upontheeccentric by means of a suitable clampingbolt Z engaging the threadedears (1 of the split portion. One end of the eccentric is herein shownas made polygonal, as at 0 outside of the end of the link and between Hthe latter and one of the sides of the extension 0 of the carrier-base.

. From the foregoing description and from the drawings it will bemanifest that by rotating the actuating-shaft D in the direction offithearrow 6, Fig. 2, the link D will be swung to the left and downward,efiecting the downstroke of the carrier from the position. shown in thedrawings and when the machine is in use operating-to draw the patunlesssome means he provided to compen sate for such wean. This compensationin our present invention is provided for by the adjustable connectionbetween the link and the carrier, as by loosening the split end (1 ofthe link the eccentric 0 can be turned in i one direction or the otherto accurately position the top of the carrier, the rotative movement ofthe.eccentric being readily effected by a wrench or spanner applied tothe polygonal portion 0 thereof, and after the adjustment has beeneffected the clamp-bolt (Z will be set up to tightly clamp the eccentricand link immovably together.

When thecarrier is elevated, as shown in the drawings, the upper pivot dwill be off center relative to the actuating-shaft, anda stop 15 (seedotted lines, Fig. 2, and fulllines,

Fig. is preferably provided to limit further throw of the crank-arms dto the right.

The carrier is herein shown as provided with a stiffening-web 0 (seedotted lines. Fig.

2,and full lines, Fig. 6,) and a short depending connection 0 extendsfrom the stiffening-web to the base O adjacent the enlargement c of thelatter.

The downward stroke or draw of the carrier is determined by means now tobe described, and such means is made readily and accurately adjustable,so that the draw may be varied according to the character of the.pattern,some patterns requiring a greater downwardmovement of thecarrier than others in order to properly separate them fromthestripper-plate after theyhave been drawn from the mold. A hub 61having aradial socket (1 for the operating handle or bar 61 is rigidlysecured to the projectingend of the actuating-shaft D, and said hub hasan annular enlargement 01 which is surrounded by a split collar dadapted to be clamped upon the hub enlargement by a suitable clamp-boltd extended through threaded holes in the adjacent ends of the collar.One of these ends, as d", is shouldered at its end and is adapted toengage a fixed lug or stop 30 on one of the base-bars A of the framesuperstructure. Now when the mold has been completed and the molder isready to draw the pattern he grasps the handle or bar d and pulls ittoward the front of the frame, thereby rotating the actuating-shaft D inthe direction of the arrow 6, Fig. 2, to lower the carrier, as has beendescribed, and after the pivotal connection cZ between the link and thecrank-arms d has passed deadcenter the weight of the carrier and thepattern-plate attached thereto will tend to complete the downwardmovement of the carrier, and such movement will continue until the part(1 of the clamp-collar d brings up against the stop 30.

To vary the draw or downward movement of the carrier just described, itis only necessary to slacken up the clamp-screw c1 and turn the collar01 in one direction or the other and then tighten the collar when theshoulder (1 is in the desired position, and it will be noted that thisadjustment can be made with the greatest nicety necessary or desirable.So, too, the means provided for adjusting the connection between thelink and the carrier can be varied to a hairs breadth, if desired, thisperfection of adjustment in the latter case being of great importance.

We have herein shown sheet-metal guards G secured to the bosses A andhubs A and extending well around the vertical guideways A to protect thesame from sand during the construction of the mold-,these guards bykeeping the sand away from the guideway and from the cooperating hubs onthe carrier reducing very greatly the wear of such parts. i

Sometimes sand will drop down from the top into the machine, and todirect the same away from the guideway we have herein shown the uprightarms 0 of the carriage as provided with inclined openings 0 the upperends of which are between the T-shaped portions 0 and the adjacent hubsc, :any sand dropping down on this part of the machine falling into thechutes or openings c and being directed by the inclined bottoms thereoftoward the interior of the machine and away from the guideways. We alsoprefer to bevel the tops of the guide-hubs c c to aid in shedding sandshould any accidentally fall thereupon.

Referring to Fig. 2, it will be noticed that at all times the operatingmechanism is located supports 01, so that no matter what the shape ofthe stool-plate or its length the carrier-acbelow the horizontal planeof the stool-plate tuating mechanism will be below the same and willnever interfere with it, and consequently the length of the stool-plateis not restricted in any manner by the structure of the machine.

If a long stool-plate and corresponding stripper and pattern plates beused, the actuating handle or bar (Z will be removed and a bent bar usedinstead to clear the projecting ends of the plates.

It will be noticed that the point of application of the actuating meanson the carriage is so located that the movement of the latter eithertoward or away from the strippenplate will be even and uniform, thedraft being equally distributed throughout the carrier, and this, inconnection with the guideways, provides for an absolutely steady andsmooth movement of the carrier and insures the maintenance of thepattern-plate in a true horizontal position absolutely parallel with theface of the stripper-plate.

In Figs. 1 and 2 we have shown strong spiral springs S attached at theirends to the upper part of the main supporting-frameand secured at theirlower ends to hooks 90 on the central portion of the carrier-base O suchsprings compensating in a measure for the weight of the carrier and theparts movable therewith and rendering the manual operation of theapparatus easier for the molder.

Referring to Fig. 2, it will be seen that the actuating force istransmitted from the operating shaft D to the pattern carrier throughthe link D the lower end of the latter being connected with the carriermidway between its sides and similarly relatively to the ends thereof inorder that the draft of the carrier shall be central and the powerapplied uniformly to the different portions of the carrier.

In order to secure as direct transmission as possiblefrom the shaft D tothe carrier and as nearly as may be in a vertical direction, the shaftis located above the pivot-pin and as nearly vertical over it asconvenient, and the curvature of the upper end of the link permits thispositioning of the operating-shaft D.

Our invention is not restricted to the precise construction andarrangement of .one practical embodiment thereof herein shown anddescribed, as the same may be modified or rearranged without departingfrom the spirit and scope of our invention.

Having described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. In a molding-machine, an open-ended frame having parallel portions atits top to support a stripper-plate, vertical, oppositelylocatedguideways on and wholly exterior to the frame, at its front and back andsubstantially midway between its ends, a carrier for the pattern-plate,hub-like extensions on the carrier at its top and bottom and projectingoutward beyond the front and back of the frame, to embrace and movevertically on the guideways, and means to actuate the carrier, the openends of the frame permitting the use of stripper and pattern plateslonger than the frame.

2. In a molding-machine, an open-ended frame having parallel portions tosupport a stripper-plate,vertical and oppositely-located guideways onthe exterior of the frame at its front and back substantially midwaybetween its ends, a U-shaped carrier for the patternplate,outwardly-extended hubs on the upright portions of the carrier, toembrace and slide vertically upon the guideways, and actuating meansforthe carrier.

3. In apparatus of the class described, a carrier comprising atransverse, centrally-apertured base having upturned arms laterallyextended in parallelism at their upper ends, to support a pattern-plate,actuating means for the carrier, including a link, a pivot-pin on thecarrier-base midway between its arms and extended across the aperture inthe base, and an adjustable connection between the link and pivot-pin,said connection being located in the aperture of the base equidistantfrom its sides.

4:. In apparatus of the class described a vertically-movablepattern-plate carrier, actuating means therefor including anoperatingshaft, an adjustable friction-clamp thereon having astop-shoulder, and a fixed stop to cooperate therewith and regulate thedrawing stroke of the carrier.

5. In apparatus of the class described, a vertically-movablepattern-plate carrier, actuat ing means therefor including anoperatingshaft, a split collar thereon having a stopshoulder, a fixedstop to cooperate therewith and regulate the drawing stroke of thecarrier, and means to clamp the collar in adjusted position on theshaft.

6. In a molding-machine, an open-ended frame having oppositelylocated,external guideways mounted on the parallel front and back portionsthereof, a U-shaped carrier for the pattern-plate, said carriercomprising a base and upright portions, hubs on its upright portions toembrace and slide vertically upon the guideways, and actuating means forthe carrier connected with the base thereof midway between the uprightportions, the latter rising from and being connected with the base attheir lower ends only.

7. In a molding-machine, a frame having upright front and back portionsconnected by a base and adapted to support a stripperplate at the top,stool-plate supports on the base, an open-ended pattern-plate carriervertically movable within the frame, and actuating means for thecarrier, supported by the frame and located wholly below the stoolplatesupports.

8. In a molding-machine, a frame, vertical, oppositely-located guidewaysthereon, and a 1 names to this specification in the presence of twosubscribing witnesses.

CHARLES M. DAY. JOHN ANDERSON.

U-shaped carrier for the pattern-plate, the

npright portions of said carrier having T- shaped extensions to sustainthe patternplate, and sand ducts 0r passages in the said 5 uprightportions, to deflect sand inward away Witnesses:

from the guideways.

In testimony whereof we have signed our 1 GEORGE OTIS DRALPER, ARTHUR W.BEARDSELL.

